How do we know that grace is sufficient for our struggles?

Grace is the foundational doctrine of the Christian faith, as it reflects God's unmerited favor towards sinners. In the sermon, it is emphasized that continual struggles with sin do not negate our standing before God, for we are justified by faith in Christ and His righteousness. Romans 8:33-34 reminds us that it is God who justifies, and since our salvation is based solely on Christ's work, we can confidently rely on His grace in our daily battles. The presence of the Holy Spirit assures believers of their identity in Christ, offering strength and support through trials.